Anybody know if these are really TII axles?
https://www.ebay.com/itm/AP-Rear-Cv-...69f3%7Ciid%3A1

Seller says they are. When I search the NCV47992 part# I get quite a few results and almost all say turbo application( Amazon doesn't say one way or the other). GSP is the manufacturer. The reason I ask is I had read on here a while back( 1 or 2 years ago) that people were ordering new or reman'd TII axles and receiving n/a ones. That no one was selling TII ones they were all n/a. Is this still the case or has this company started making them? Anybody have any experience with these? Are they the real deal? Thanks.

 

I picked up a set of the ebay ones discussed a while back and they look just like the ones in that ad.
They have the correct bolt pattern for the turbo diff and worked fine. I'm only running about 250hp, so I have no idea how strong they are compared to OE.

 

GSP lists that part number as fitting 86-91 turbo and 93-95. Axle re builders go by size, and everyone else goes by part number, so you see some crazy stuff.

while you can put it in and run it, it may be best to view these as good cores and inspect them and put some (nice) grease into them

 

Summit Racing sells them for cheaper (https://www.summitracing.com/parts/gna-ncv47992). If your interested, you can always buy them from Summit and checkout the fit. If they don't fit, you can always return them to Summit without any hassles. FYI, GSP is a Chinese based company. So, don't expect too high quality part. I once bought the SurTrack (also made in China) for my NA. They lasted me just short of two years (https://www.rx7club.com/2nd-generati...hafts-1136697/)

 

I was afraid/ figured they were Chinese. I haven't decided what I'm gonna do. A couple months ago there were all kinds of used JDM ones on Ebay for like $125 to $150, now it looks like they're all gone. I think I'll give it a week or so since I'm a couple weeks out from needing them. See if any more pop up or if they reduce the price again on the ones I probably should've bought last night before the sale ended.

 

How can they be for '86-'91 TII when the S4 TII and S5 TII axles are different?
https://www.mazdatrix.com/86-92-fc-turbo-stub-axles/

 

the stubs are different, but the axles are the same

 

Sorry, I stand corrected. All this time and I still don't know the car, or forgot what I once knew.

 

i was about to say that its like the miata rear suspension, some how the stub axles change lengths, but everything else stays the same and it still fits?

 

i believe I once ordered TII axles from summit and was sent a NA one

 

Ran into this issue before, and the t2 axles are not all the same. Running early 87 t2 axles. I found this out while switching to a s5 diff (welded). I needed to use these axle spacers in order to account for the length difference.



https://www.maverick-motorsports.com...c-axle-spacers

 

Interesting, but Mazda parts catalog lists for 86-91 w/o turbo axles M030-25-500B -> M030-25-500C, which indicates same (i.e., interchangeable) part with design improvement, and for 87-91 turbo axles M040-25-500D -> M040-25-500E, which again indicates same (i.e., interchangeable) part but with design improvement. So, I don't know where those spacers would come into play. Unless, are they for going from turbo to non-turbo axles or vice versa?

 

weird, it super cedes depending on where you look...

Mazda Japan lists different prices though, so they probably are different...

M040-25-500D up to chassis 608385, and then switches to M040-25-500E until the end of the FC run

Japan seems to have stock, Mazda USA is NLA (its actually NOA, its available, they just aren't going to order any)

 

No serial numbers are listed in my sources.

 

Yeah fair enough. I just remember years ago when I swapped my diff I was so confused. Then I grabbed all of my t2 axles, and some were different lengths which matched the need for the axle spacers I posted. I’ve had both s5 and s4 t2 components.

 

Just to update. There never were any other TII axles to pop up on Ebay. Just one set of JDM ones for $599 and another that said JDM and claimed 74,000mi. but had a picture of a US spec speedometer showing 73,334mi so I wasn't sure if they were really TII or n/a so I rolled the dice and bought them from Summit since they were cheaper and I felt better about the return policy. They are TII axles. I don't have any stock ones to compare to but they are beefier than the n/a ones and the bolt patter is right for the TII stub shafts. They actually look pretty nice. Only thing I notice is the outer CV joint feels a little rough so I may do as j9fd3s suggested and re-grease them.